The number of pairs of natural numbers the difference of whose squares is 45 will be –

The ratio of the weights of Monu and Sonu is 4 : 5 If the weight of Monu increases by 12 percent and the weight of Sonu increases by 16.5 percent, the total weight of both increases by 73.76 kg, then find the weight of both of them By what percent does it increase?

Two partners invest 1,25,000 and 85,000 respectively in business and agree that 60 % of the profit should be divided equally between them and the remaining profit is it be treated as interest on capital. If one partner gets 300 more than the other, find the total profit made in the business. 

A conical vessel of radius 6 cm and height 8 cm. is completely filled with water. A sphere is lowered into the water and its size is such that when it touches the sides, it is just immersed. The fraction of water that overflows is? 

A Cistern can be filled by a tap in 4 hours while it can be emptied by another tap in 9 hours. If both the taps are opened simultaneously then after how much time will the cistern get filled?

Direction: Study the following information and answer the related questions. P, Q, R, S, T, A, B, C, D and E are employees of a company. A table shows the average age of any two employees of the company. The average age of A and B is 27.5.
i.e. average age of A & P is given as (A+P)/2=39.5

What is the average age of D, R and S?

ABC is an isosceles triangle with AB = AC. The side BA is produced to D such that AB = AD. If ∠ABC = 30°, then ∠BCD is equal to 

If the sum of first three natural numbers from a group of six consecutive natural numbers is 36, then the sum of last three natural numbers will be?